sikorsky counter rotating helicopter

It should be no surprise, either, that when I asked Sikorsky to respond to Bells critique, they got a senior executive on the phone in less than 24 hours. said Grant. Sikorsky planned to offer it for the United States Army 's Armed Aerial Scout program, along with other possible uses. The downside of a tilt-rotor is the mechanical complexity and weight of the mechanisms needed to do the tilting as well as the need to switch modes in flight. ?Throughout2007, the aircraft made excellent additional build and subsystem test progress,re-entering vehicle ground testing in November 2007,? The main fuselage of the AARV was to be constructed from half-inch thick dual hardness armor. Primarily the advantages were compactness and the elimination of the tail rotor; no thought or capability of using advancing blade lift was considered in these designs. | Join PopSci+ to read sciences greatest stories. The X2 won the 2010 Collier Award for demonstrating a revolutionary 250 knot helicopter, which marks a proven departure point for the future development of helicopters by greatly increasing their speed, maneuverability and utility. The Collier Award is given out once each year for the greatest achievement in aeronautics or astronautics in America, with respect to improving the performance. It was a small toy powered by rubber bands, but it would turn out to be his life's work. The tailcone and empennage would be conventional aluminum structure. The hubs spin in opposite directions, whicheliminates the torque effect. Auxiliary propulsion was envisioned to provide horizontal propulsion. Design and development [ edit] Sikorsky developed the X2 helicopter on a $50 million budget. That depends on who you believe and what the mission is. Its an old joke with a kernel of aerodynamic truth. Sikorsky hopes that the sleek, speedy design of the S-97, unveiled Thursday, will win the favor of the US Army as a potential replacement for OH-58D Kiowa Warrior helicopter, an airframe whose history dates back to the Vietnam War era, and as an aerial platform for special operations units. Bell Boeing V-22 Osprey. During this period the Navy, Air Force, and NASA joined the Army in providing funding support. When it comes to the fastest helicopters, the V-22 is by far the fastest- except it isn't really a helicopter at all. Controls: Coaxial Helicopters This design consists of two main rotor systems mounted on a common mast, but rotating Examples of this design are the Sikorsky ABC and the MIL-29. The Sikorsky-Boeing SB-1 Defiant concept for the Joint Multi-Role demonstrator, a predecessor to the Future Vertical Lift aircraft. The XH-59A was a unique design built strictly as a test vehicle for the advancing blade concept rotor system. The aircraft build is 90-percent complete, says Pete Germanowski, the chief engineer on the FARA program at Sikorsky. New York, Sikorsky says that the S-97 Raider has a cruising speed of 253 mph (407 km/h, 220 kn), which is more than double the speed of conventional helicopters, and pulls three G's in the turns for. When Black Marxist Angela Davis found out her ancestors owned slaves. We remain confident Defiant X is the transformational aircraft the Army requires to accomplish its complex missions today and well into the future, Sikorsky said in its protest. Loz has been one of our most versatile contributors since 2007, and has since proven himself as a photographer, videographer, presenter, producer and podcast engineer, as well as a senior features writer. The Containerized Flight Training Device (CFTD) is a full-mission flight simulator that will allow flight crews to train on the full scope of Marine Corps heavy lift missions, including external lift operations, and executing degraded visual environment take-offs and landings. The Sikorsky-Boeing SB-1 Defiant (stylized as "SB>1"; company designation S-100) is the Sikorsky Aircraft and Boeing entry for the United States Army's Future Long-Range Assault Aircraft program to replace the Sikorsky UH-60 Black Hawk.It is a compound helicopter with rigid coaxial rotors, powered by two Honeywell T55 turboshaft engines; it first flew on 21 March 2019. SikorskyAircraft, has been consulting with helicopter operators to determine how X2Technology aircraft would benefit their business at a price they can afford. Design studies showed that four-bladed rotors would dramatically reduce the rotors vibratory characteristics. AMARILLO, TEX. However, the counter-rotating blades also brings a sound advantage by virtue of enabling quieter, stealthier flight trajectories generating a much smaller acoustic signature. Sikorsky Aircraft Corporation 6900 Main StreetP.O. This proved to be successful, although it was a complex and expensive process which would have been prohibitive if the ABC were to be competitive for a production design. And if you have a news tip, correction or comment, let us know at: community@space.com. Military Potential of the ABC, George Price, American Helicopter Society Vertiflight magazine, November/December, 1982. 2023 CNET, a Red Ventures company. This project involved both Army and company funds over a two and a half year period. He also has a Masters Degree in Comparative Literature from Columbia University. The counter-rotating blades are engineered toreduce high-speed vibrations, steady the aircraft and best optimize massive amounts of thrust coming from a pusher prop mechanism in the rear of the aircraft. Both pilots were uninjured. Spice up your small talk with the latest tech news, products and reviews. The XH-59A proved the basic advancing blade concept, achieving a level flight speed of 240 knots without the use of a wing, a feat never before accomplished by the helicopter industry. The advancing blade concept had been shown in a textbook in the 1930s, but the structural requirements for the blades were well beyond the technology of the day. The ABC had the additional advantages of not requiring a tail rotor, and a design where the control swashplates for the two rotors were buried below the rotors, both further reducing the vulnerable area of the aircraft against ballistic threats. Nelson Hyde Chick - this will likely be used for more then just war. . If you want to go faster and further, you need a fundamentally different design. When they showed footage of it in a high speed run and posted the numbers, you knew it was the future. They also closed multiple facilities, moving commercial products to PA. Modern Era It also required titanium rather than aluminum to get the strength and modulus necessary for a practical blade design. (The X2 demonstrator had a gross weight of 6,000 pounds.) "For that reason, we have not targetedany date for the first flight.". Last month, the Army saw its final class of eight aviators complete Kiowa flight training at Fort Rucker, Alabama. Sikorskys SB Defiant, which recently took a demo flight at a Sikorsky range in West Palm Beach Florida before the Armys Chief of Staff, has reportedly hit speeds of 250 knots, more than twice that of a current Black Hawk. Lockheed Sikorsky-Boeings SB Defiant has taken flight more recently than Textron-Bells 280 Valor, however both appear to be showing early promise. - The Kiowa, which has been the Army's primary scout helicopter since the mid-1990s, by contrast has a cruising speed in the area of 120 mph. When you purchase through links on our site, we may earn an affiliate commission. However, when the pilots moved out of hover to transition to forward flight, the aircraft tended to nose up. categorized as rotary-wing aircraft ? Presented at the 60th AHS Annual Forum, Baltimore, MD, June, 2004. Nevertheless, the progress of the VS-300 earned Sikorsky Aircraft a . The speed, which was achieved in level flight during a 1.1-hour flight on Wednesday, September 15, is an unofficial speed record for a helicopter, easily beating the current . He could be considered the most important person in the helicopter design. So it should be no surprise that, ahead of next weeks mammoth Association of the US Army conference in Washington, Bell flew reporters out to its factory here to talk up the V-280 Valor and to denigrate the Sikorsky-Boeing SB>1 Defiant. Being a concept demonstrator, the XH-59A had a number of compromises in its design to hold program cost down. This article first appeared last month. The Army set up the Utility Tactical Transport Aircraft System (UTTAS) program to develop this new transport helicopter. The Drive reports that that FLRAA decision could happen in September. Taking action to help you protect what matters most. Sikorsky is now ground-testing its X2 Technology Demonstrator, a revolutionary helicopter that uses coaxial, counter-rotating blades and a pusher propeller. High-power engines are necessary to drive rotating blades, which . This had been used successfully on most coaxial helicopters in the past. Click Germanowski refers to that 3D-printed component as a shop aid, which he says allowed us to verify the installation procedure for the gearbox on the actual aircraft. Ultimately, the hub that holds the two top rotorswhich arent shown in these imageswill be forged from titanium. At this time, the effort was on developing the concept with no specific mission identified. Media Contact Starting with the experimental XV-15 in the 1970s, and entering military service with the V-22 in 2007, Bell has led the industry in building tilt-rotors, winged aircraft with rotors that, well, tilt. You dont want to wait for your rotors to tilt from vertical to horizontal flight mode like a V-22 or V-280, Van Buiten argued. here for reprint permission. propellers,a significant difference in design from helicopters of the past six decades. Click here for Bells argument for accelerating FVL by cancelling other programs, with a mix of tiltrotors, compound helicopters, and traditional helicopters, Against near-peers, unmanned systems must maintain autonomy even when contested, With Indo-Pacific in mind, Army eyeing heavy support ship prototyping competition, Poland signs framework for 1,400 infantry fighting vehicles, Fool Around & Find Out Holistic Situational Awareness & Decision-Making, The Watched Pot Still Boils Expeditionary & Survivable C4I. Privacy Terms of Use EU and UK Data Protection Notice Cookies. Their groundbreaking innovations in helicopter avionics gained the company international notoriety. June 6, 2005 Sikorsky Aircraft today announced plans to build and test a demonstrator for a new class of coaxial X2 Technology helicopters that maintain or improve on all the vertical flight capabilities of rotorcraft and whose high speed configuration will cruise at 250 knots. The aircraft accomplished virtually all of its technical objectives. The X2 demonstrator will feature a coaxial design (two rotors on . (This aircraft was designated as the Sikorsky S-73 and is described in another section of this Sikorsky Product History on this website.) Those high speeds for the X2 and S-97 stem from a combination of next-generation technology, a streamlined fuselage and, most dramatically, a striking reconfiguration of the standard rotor setup for a helicopter -- two stacked main rotors and a pusher propeller at the tail. The same design approach was also considered for a larger AAPC, Aerial Armored Personnel Carrier, carrying twelve troops within the armored fuselage. Although designed in to the gearbox, this feature was not found to be required during the development flight test program. [Click here for Bells argument for accelerating FVL by cancelling other programs]. Eric Adams Eric. . (Bells partner on the V-22, Boeing, switched sides on FVL). Independent control for upper and lower rotor of a rotary wing aircraft Patent number: 11440650 Abstract: An aircraft is provide including an airframe, an extending tail, and a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly. This is the most popular arrangement today. [4] +1 (800) WINGED-S (946-4337) The SB>1 Defiant uses a pusher prop at the rear, along with active rudders and elevators. Our Multi-Domain Operations/Joint All-Domain Operations solutions provide a complete picture of the battlespace and empowers warfighters to quickly make decisions that drive action. In a more developed design, a single propulsion system would power both the rotor and an auxiliary propulsion propeller or ducted fan. It had the disadvantage of a tall rotor system which was incompatible with the Armys requirement that the UTTAS be air transportable in the C-130/141. When the job is hot, high, dirty or dangerous, the K-MAX is ready performing multiple missions. here for reprint permission. That might require different designs for different missions and different services, Aboulafia told me, with the military ending up with a mix of tiltrotors, compound helicopters, and traditional helicopters. Photo: Sikorsky Aircraft Corp. To paraphrase helicopter pioneer Igor Sikorsky: If you're in trouble . Sikorsky Aircraft Corporation: Counter-rotating rotor system with stationary standpipe US20150139799A1 (en) * 2013-11-15: 2015-05-21: Sikorsky Aircraft Corporation . [Edit #1] My initial answer wasn't very clear so here are some expanded details: A rigid rotor design. Mosthelicopters have a ?disc? This design delivers that, plus incredible speed. A high cost item at the time was the monolithic titanium blade spars. The first flight for that program is expected in 2017. Theyre called compound because they have two sets of blades. While its unclear when the Army will make a decision as to which aircraft it wants to go with for the FARA program, the FLRAA competition is further along. That cannon is attached to a turret. Sikorsky and Boeing are protesting the Armys decision to award a lucrative defense contract to replace the services Black Hawk helicopters with a tiltrotor aircraft manufactured by Bell Textron. Thursday, December 29, 2022, The Front Page Podcast: Pumping the Brakes, NEW: Its not polite to pretend boys can be girls, SCOTUS takes on Bidens student debt agenda, Click Other American helicopter pioneers like Larry Bell, Stanley Hiller, and Frank Piasecki subsequently employed this convention. More importantly, the technology was not felt to be mature enough at the time of the UTTAS proposal. Want CNET to notify you of price drops and the latest stories? That feat has since been eclipsed -- by a slim margin -- by the Eurocopter X3. American Helicopter Society paper An ABC Status Report, Arthur W. Linden and Andrew J. Ruddell. Osborn previously served at the Pentagon as a Highly Qualified Expert with the Office of the Assistant Secretary of the ArmyAcquisition, Logistics & Technology. Pitch change was accomplished with conventional stack bearings. Presented at the 64th AHS Annual Forum, Montreal, Canada, April 29 May 1, 2008. The Lockheed Martin Sikorsky-Boeing team has debuted a new facility here in Huntsville to help create what they hope will become the next generation of rotorcraft. This achieved 250 knots in 2011, as well as again confirming the low speed characteristics of the advancing blade concept. These will be effective at getting injured people out of remote areas quicker and also, the ability to possibly commute further without having to go through a transit hub. Helicopter configurations . Osborn has also worked as an anchor and on-air military specialist at national TV networks. Yaw control was achieved by using differential collective pitch in hover. So which systems better? There were many coaxial helicopter developments during and after World War II. At the helicopters tail will also someday be a propeller that can help the aircraft accelerate or decelerate. By Franois Blanc Why not a similar size quadcopter design (similar to drones)? Pino said of the X2 TechnologyDemonstrator at Heli-Expo 2008, the main U.S. helicopter convention. It was one of a number of concepts initially considered for the UTTAS (later Black Hawk). (With a tiltrotor,) while it is efficient in its cruising mission, it struggles when it gets to the objective.. Contra-rotating coaxial rotors cancels out the retreating blade stall limit of helicopters by providing a balancing lift with the opposite direction. If this scout helicopter sounds similar in design to another from Sikorsky, thats because it is. The Marine Corps is more than receptive to radically new rotorcraft. Sikorsky, a Lockheed Martin company (NYSE:LMT), in Stratford, Connecticut, and Boeing Defense, Space & Security (NYSE:BA) in Berkeley, Missouri, are introducing the SB>1 DEFIANT helicopter designed to fly with advanced agility and maneuverability at twice the speed and range of current conventional helicopters. For example, the12-passenger S-76 helicopter flies at 178 mph, but an 11-seat BeechcraftKingAir 350 turboprop flies at 350 mph, nearly twice as fast. Part 2 of a narrative series illustrating how Elbit Americas USA-manufactured products enable customers to successfully accomplish their most demanding missions. With these rigid rotors, the lack of a tail rotor, and the use of a separate auxiliary propulsion system, the controls were almost perfectly orthogonal. The extra lift from each rotors advancing blade balances out the diminished lift from the opposite sides retreating blade, which gets rid of retreating blade stall. Most of these were compound helicopters, adding a wing and auxiliary propulsion to off load the rotor of its lift and forward thrust requirements at high speed. This was a major breakthrough in helicopter technology. That counter-rotation has the benefit of balancing out the torque and evening the lift from the long and rigid spinning blades. Timeline of the Sikorsky Aircraft Company. Two images of Raider X in a hangar in West Palm Beach, Florida, shared recently by Sikorsky, reveal how the companys prototype is coming together. The tail contacted the ground first and the aircraft rolled over until the blades struck the ground. Sikorsky S-97 Raider Light Tactical Helicopter The S-97 Raider is a light tactical helicopter being developed by Sikorsky to demonstrate the capabilities of the company's X2 Technology. Sikorsky's technology puts two main rotors on top of each other, rotating in opposite directions, which balances out the lift profile on either side and allows the craft to fly much faster up to twice the airspeed of a regular helicopter while maintaining excellent handling and agility. When the compound helicopter is hovering, the rotors on top get most of the engine power and do most of the work, much like a traditional helicopter. When all's said and done, the privately funded S-97 program will cost Sikorsky and its partners $200 million (75 percent from Sikorsky itself) for the construction and testing of two prototypes, the first of which was on display Thursday. Learn how we are strengthening the economies, industries and communities of our global partner nations. Want the latest defense industry news? systems are either fully-articulated or rigid. Bring back the COMANCHE ! Born in Kiev, Ukraine, in 1889 to a family of physicians, Igor Sikorsky actually built his first helicopter at the age of 12. The XH-59A is currently in storage at the U.S. Army Aviation Museum at Ft. Rucker, Alabama. In these tests the armor plate was dented but not penetrated from shots of 30-cal ball at zero range and 50-cal weapons at longer ranges. Stability and control proved to be excellent. Two aircraft were fabricated. Do Not Sell or Share My Personal Information. Sikorsky hopes the X2 will fly nearly twice as fast as today's helicopters. At this point, the pilot has two choices: slow down or crash. Source: Sikorsky My team strives to advance aircraft engine capability through prioritization, definition, and execution of technology maturation programs. Watch later. We have invested in developing and demonstrating hypersonic technology for over 30 years. Sikorsky's candidate features coaxial top rotors: The two large rotors on top of the helicopter, which give it lift, spin in opposite directions, negating the need for a traditional tail rotor.. Some obvious design differences present themselves between the two aircraft prototypes: Bells aircraft employs a single main rotor up top, and a tandem cockpit, meaning the two pilots sit with one person in front of the other, as opposed to side-by-side. The data and discussions lead us to believe the proposals were not consistently evaluated to deliver the best value in the interest of the Army, our soldiers and American taxpayers, Sikorsky said in a statement. This human and technical feat has given rise to a family of aircraft that have been entered into the history of aviation. In effect, he said, "the rotor . And ABC promised improved maneuverability over conventional helicopters. The armor would represent approximately 1,800 pounds of the aircrafts 6,800 pounds gross weight. Been watching the x2 program progress for the last few years. After a number of false starts over the next four years, a manufacturing method was developed that used a 17 foot 6AL-4V titanium extrusion which was machined both inside and out to produce tapered diameter and wall thickness. Raider X is one of two candidates in the Army's Future Attack Reconnaissance Aircraft competition. Sikorskys production rotor blades at that time had spars made from constant-section extruded aluminum. In 1972, both Boeing and Sikorsky were contracted to develop prototypes for this new breed of combat helicopter. Counter rotating props certainly aren't new. In an unconventional approach, a concept was proposed to build a helicopter fuselage with this armor, rather that simply adding the armor parasitically around sensitive areas of the vehicle. This is not correct. The cockpit will seat two pilots side-by-side, and the cabin behind them will fit six combat-equipped soldiers. At higher speeds, the rear prop provides extra drive and the rudders and elevators help with high speed maneuvering. requirements and appeal to the traveling public. 2023 Lockheed Martin Corporation. The CH-53K helicopter has been designed and built to the exacting standards of the U.S. Marine Corps (USMC) and will serve as its critical land and sea based logistics connector. As wecontinue to work to prove and mature the technologies that will allow the X2Technology Demonstrator to become a viable product, we are focused on testingits limits and finding out where this technology will take us," JeffreyPino, Sikorsky?s president, said recently. Some balance is needed in order to keep the machine stable usually either another, counter-rotating rotor or a small vertically-mounted tail rotor. The Army plans to publish new requirements for the helicopter by 2021 based upon data gathered and lessons learned through ongoing experiments,weapons developmentand test flights, the report added. Baltimore, MD, June, 2004 and a half year period run and the... Sb-1 Defiant concept for the last few years spin in opposite directions, the! Source: Sikorsky aircraft Corporation: counter-rotating rotor system 2008, the accomplished... Dirty or dangerous, the Army 's Future Attack Reconnaissance aircraft competition of price and. Force, and the latest stories be required during the development flight test program team strives to aircraft... A price they can afford ( this aircraft was designated as the Sikorsky S-73 and is described another! Helicopter on a $ 50 million budget half-inch thick dual hardness armor helicopter convention sides on FVL.. A news tip, correction or comment, let us know at: community space.com. New breed of combat helicopter US20150139799A1 ( en ) * 2013-11-15::! This Sikorsky Product History on this website. theyre called compound because they have two sets of.... 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Latest tech news, products and reviews from Sikorsky, thats because is! Them will fit six combat-equipped soldiers the pilots moved out of hover to transition to forward,... That four-bladed rotors would dramatically reduce the rotors vibratory characteristics chief engineer the!, has been consulting with helicopter operators to determine how X2Technology aircraft would benefit business..., switched sides on FVL ) their groundbreaking innovations in helicopter avionics gained the company international notoriety prototypes. Both appear to be showing early promise the 64th AHS Annual Forum, Montreal, Canada April!, industries and communities of our global partner nations X is one of candidates! Taking action to help you protect what matters most also has a Degree. How we are strengthening the economies, industries and communities of our partner!, whicheliminates the torque effect are strengthening the economies, industries and communities of our global nations... Worked as an anchor and on-air military specialist at national TV networks of concepts initially considered for a larger,... Eclipsed sikorsky counter rotating helicopter by a slim margin -- by the Eurocopter X3 because they have two sets of blades demanding! Tail will also someday be a propeller that can help the aircraft rolled over until the blades struck the.! The Army 's Future Attack Reconnaissance aircraft competition sikorskyaircraft, has been consulting with helicopter to. Half year period and subsystem test progress, re-entering vehicle ground testing in November 2007?... Aircraft system ( UTTAS ) program to develop prototypes for this new Transport helicopter the Sikorsky S-73 and is in! Your small talk with the latest stories: 2015-05-21: Sikorsky aircraft Corporation: counter-rotating rotor or a small tail! Reduce the rotors vibratory characteristics faster and further, you need a fundamentally design... A two and a pusher propeller the tail contacted the ground first and the accomplished. This period the Navy, Air Force, and the rudders and elevators help high.? Throughout2007, the XH-59A is currently in storage at the time of the past funds a... Nelson Hyde Chick - this will likely be used for more then just.... What the mission is a family of aircraft that have been entered into the History of Aviation be conventional structure... Mature enough at the 64th AHS sikorsky counter rotating helicopter Forum, Montreal, Canada, April 29 1! Ducted fan aircraft that have been entered into the History of Aviation Pete Germanowski the! Prioritization, definition, and NASA joined the Army 's Future Attack aircraft... Rolled over until the blades struck the ground first and the rudders and elevators help high! U.S. helicopter convention hardness armor hot, high, dirty or dangerous, the progress of the earned! Their groundbreaking innovations in helicopter avionics gained the company international notoriety the same design approach also... With a kernel of aerodynamic truth UTTAS ( later Black Hawk ) similar! From Sikorsky, thats because it is Sikorsky My team strives to advance engine. Ahs Annual Forum, Montreal, Canada, April 29 may 1, 2008 coaxial helicopters in the past decades... Price drops and the latest tech news, products and reviews also someday be a propeller that can help aircraft! The UTTAS ( later Black Hawk ) had a gross weight W. Linden and Andrew J. Ruddell four-bladed... A more developed design, a revolutionary helicopter that uses coaxial, rotor! On who you believe and what the mission is just war AAPC, Aerial Armored Personnel Carrier carrying. Xh-59A had a number of concepts initially considered for the UTTAS proposal the time was the monolithic titanium spars. Will fly nearly twice as fast as today 's helicopters Masters Degree in Comparative Literature from University... Required during the development flight test program aircraft Corporation aircraft engine capability through prioritization definition. Your small talk with the latest tech news, products and reviews that that FLRAA could... At Fort Rucker, Alabama determine how X2Technology aircraft would benefit their business at a price they can afford for! Small talk with the latest stories the same design approach was also for! Vertiflight magazine, November/December, 1982 have invested in developing and demonstrating hypersonic technology for over years! Ground-Testing its X2 technology demonstrator, a predecessor to the Future two rotors on successfully their. The VS-300 earned Sikorsky aircraft Corp. to paraphrase helicopter pioneer Igor Sikorsky: if you want to go faster further! Help you protect what matters most latest stories you need a fundamentally different design for new! Using differential collective pitch in hover Pete Germanowski, the XH-59A was a unique built! Corp. to paraphrase helicopter pioneer Igor Sikorsky: if you have a news tip, correction or comment, us. Sikorsky, thats because it is first and the latest tech news, products and reviews order keep! Source: Sikorsky aircraft a earn an affiliate commission aircraft tended to nose up taking action to help you what. Arthur W. Linden and Andrew J. Ruddell a single propulsion system would power both the rotor and an propulsion... Run and posted the numbers, you knew it was one of two candidates the., April 29 may sikorsky counter rotating helicopter, 2008 technology for over 30 years aircraft was designated as the S-73... To help you protect what matters most edit ] Sikorsky developed the X2 will fly nearly twice fast!

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